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Finding the Fourth Proportional to 11,426.68, 15,775.70 and 7,454.68

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Solution

The fourth proportional to 11,426.68, 15,775.70 and 7,454.68 is: 10,291.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.68 : 15,775.70 = 7,454.68 : x
  2. Step 2: Convert to fraction form
    11,426.68/15,775.70 = 7,454.68/x
  3. Step 3: Cross multiply
    11,426.68x = 15,775.70 × 7,454.68
  4. Step 4: Simplify right side
    11,426.68x = 117,602,795.28
  5. Step 5: Solve for x
    x = 117,602,795.28/11,426.68
  6. Step 6: Final answer
    x = 10,291.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.